Hierarchical modeling of strain-concentrating effect in notched ceramic-matrix composite laminates
文献类型：期刊论文
| 作者 | Guan XY(官小轶)2,3; Wang, Yana1; Jiao, Jian1; Yang ZM(杨正茂)2,3 |
| 刊名 | INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
 |
| 出版日期 | 2025-10-15 |
| 卷号 | 304页码:15 |
| 关键词 | Ceramic-matrix composites (CMCs) Computational modeling Strain concentration Stress concentration Microstructural variability Fiber breakage |
| ISSN号 | 0020-7403 |
| DOI | 10.1016/j.ijmecsci.2025.110641 |
| 通讯作者 | Jiao, Jian(Jian.Jiao@biam.ac.cn) ; Yang, Zhengmao(zmyang@imech.ac.cn) |
| 英文摘要 | This study presents a hierarchical analysis framework to examine the stress-strain distributions in notched fiber-reinforced ceramic-matrix composite (CMC) laminates and correlates microstructural variability with macroscopic mechanical responses. Hierarchical models are employed, including a finite element (FE) model incorporating an inelastic constitutive model for CMC laminates, an analytical model that captures inelastic deformation resulting from matrix cracking and a micro-mechanical model developed to assess fiber break displacement due to fiber failure, accounting for the interfacial shear response between fibers and the matrix. Both the analytical and FE models produce accurate stress predictions; however, the results are non-conservative. The strain predictions are validated against digital image correlation data under moderate strain conditions, with the analytical model providing more conservative strain estimates. A domain map of the elastic-inelastic transition near the notch edge, as a function of applied stress and notch size, is presented to assist in predicting stress and strain distributions. Simultaneous analysis of stress and strain distributions reveals that inelastic strains in the concentration region reduce peak stresses, thus mitigating stress concentration. Quantitative analysis of microstructural features using X-ray tomography demonstrates a strong correlation between microstructural variations and the stress state in the stress concentration region of the notched CMCs. The results indicate that hierarchical analytical modeling correlates stress distributions with the microstructure ahead of notches, offering new insights into the behavior of the notched CMCs. |
| 分类号 | 一类 |
| WOS关键词 | REINFORCED BRITTLE-MATRIX ; MECHANICAL-PROPERTIES ; STRESS REDISTRIBUTION ; FRACTURE-BEHAVIOR ; CRACKING STRESS ; VIRTUAL TESTS ; DAMAGE ; FAILURE ; SENSITIVITY ; PREDICTION |
| 资助项目 | National Natural Science Foundation of China (NSFC)[52105165] ; National Natural Science Foundation of China (NSFC)[U24B2028] ; Stable Support Project, China[KZ0C230599] |
| WOS研究方向 | Engineering ; Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:001546501400001 |
| 资助机构 | National Natural Science Foundation of China (NSFC) ; Stable Support Project, China |
| 其他责任者 | Jiao, Jian ; 杨正茂 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/103454]  |
| 专题 | 宽域飞行工程科学与应用中心 |
| 作者单位 | 1.AECC Beijing Inst Aeronaut Mat, Natl Key Lab Adv Composites, Beijing 100095, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 3.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Guan XY,Wang, Yana,Jiao, Jian,et al. Hierarchical modeling of strain-concentrating effect in notched ceramic-matrix composite laminates[J]. INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES,2025,304:15. |
| APA | 官小轶,Wang, Yana,Jiao, Jian,&杨正茂.(2025).Hierarchical modeling of strain-concentrating effect in notched ceramic-matrix composite laminates.INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES,304,15. |
| MLA | 官小轶,et al."Hierarchical modeling of strain-concentrating effect in notched ceramic-matrix composite laminates".INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES 304(2025):15. |
入库方式： OAI收割
来源：力学研究所
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